Koscoe c



H. C. HOFFMAN.-

OF MM ING DISK WHEELS AND RIMS.

PROCESS 'PPLICATON FILED 001111, 1919.

Patented' May 3,; i921.

NITED ROSCOE C. HOFFMAN, 0F INDIANAPOLIS, INDIANA.

PROCESS 0F MAKNG IDSK WHEELS AND RIMS.

retenez.

Application filed October 11, 1919.

To all whom t may concern:

Be it known that l, ltosoon C. HOFFMAN, a citizen of the United States, and a resident of indianapolis, county of Marion, and State of indiana, have invented a certain new and useful Process of lvlalring Dish Vilheels and Rims; and l do hereby declare that the following` is a full, clear, and en* act description thereof, reference being` had to the accompanying,1 drawings, in which like numerals refer to lilre parts.

rlhis invention relatos to a process of forming a disk wheel and tire rim so as to greatly simplify the manufacture thereof, whereby the dish wheel and the greater portion` of the rim will be integral, the other portion of the rim beingv formed and interlocled therein Without riveting; or 1welding. rihis process will not only minimize the cost of production in manufacturing disir wheels and rims, but will greatly add to the strengti thereof.

ln the dravings, which are made a part of this application, Figure 1 is a central. cross section talren through a dish wheel blank. Fig. 2 is the same as 1 showiup, the integral portion of the rim drawn out. Fig. 3 is the same as Fig. 2 showingl a depression or peripheral channel rolled in the periphery of the rim. lEig. shows a section taken through a portion of the rini member to be mounted thereon. Fig. 5 is the same as Fig. 3 showing the rim member mounted in position and the full assembly of the disk and rim: Fig. G shows a section of a portion of an assembled rim and Wheel adaptable for straight side tires.

rllhe process consists of stamping' out a blank sheet metal disk 10, shown in Fig. 1, having; substantially the same contour as the disk Wheel. This blank is then drawn out into the form shown in Fig. 2 so as to form a rim member 11 integral therewith,

- having a turned over flange 12 adapted to engage the bead upon a tire casing` of the clencher type. rlhe form shown in Fig. 2 is then rolled so as to obtain a depression or channel 13 about the entire periphery of the rim 11.

The rim member 1lwhich has its inner edge folded over to form a shoulder 15,

has its ends butt-welded so as to be circular, with its outer edge rolled so as to provide a flange 16 for'engaging the bead of a olencher type casing on the opposite side from the flange 12. IThe rim 14 is assembled on the rim 11 by forcing said Specification of Letters Patent.

Patented lll/lay 3, 1921.

serial no. 330,062.

rim member over the rim 11, so that the folded shoulder 15 will drop into the channel 13, whereby it will lock therein and secure the rim members together. rlhe rim 11 will receive the stress and strain of the weight applied upon the wheel, whereas the member will have only a lateral force exerted thereon, which will be met by the shoulder 15 embedded in the channel 13.

lbigg. shows the same process and construction excepting` that the clencher flange 112 is substituted for the flange 12 adapted to engage and secure a casing` 17 of the stivight side type, and the clencher flange ll is substituted for the flange 16 in which is secured a detachable ring` 18 in position to 'ge the other side of the straigl'it side e invention claimed is:

l. mi e process of forming; a dish wheel and l consisting?)` of stamping` out a sheet il. The process of forming a dislr wheel rnn consisting' of stamping out a sheet rL l dish, drawino` out a rim from said l forming a flange on said rim, rolling a peripheral depression around said rim, and securing' an oppositely extending' rim Liember, having' an oppositely formed flange thereon, to said first mentioned rim by forcing; one rim over the other, the second mentioned rim having an enlarged edge which forms a shoulder enpniginnI in the depression, whereby it will lock therein.

The process of forming a disk wheel and rim consisting` of stamping out a sheet etal dish, drawing out a rim from said dish, fori/ninga flange on said rim, rolling a peripheral depression around said rim, and securing an oppositely extending rim member, having an oppositely formed flange thereon, to said first mentioned rim by forcing one rim over the other, the second mentioned rim having an oppositely flanged edge which forms a shoulder engaging in the depression whereby it will lock therein.

lln witness whereof l have hereunto affixed my signature.

RSCOE C. HUFFMAN. 

